In short: An HMO loft conversion adds one or two letting rooms, often with an ensuite, in the roof space. We carry this out across East Sussex, priced against the HMO rules for England and the council’s own standards.
- Nation
- England
- Pricing region
- South East
- Postcode areas
- TN, BN, RH
- Main towns
- Brighton, Eastbourne, Hastings, Hove, Bexhill-on-Sea
What do loft conversions for extra rooms in East Sussex involve?
- Dormer or roof windows
- Feasibility and head-height check
- New stair within the protected route
- Building control sign-off
- Structural design and steelwork
- Planning or permitted development check
Which rules apply in East Sussex?
- 3–6 unrelated sharers is use class C4; changing from a family house is usually permitted development unless an Article 4 direction applies.
- Building regulations cover structural changes, new partitions, ensuite drainage, fire-resisting construction and notifiable electrical work.
- Smoke alarms on every storey with living accommodation and CO alarms by fixed combustion appliances (other than gas cookers) are required by law.
- Licensed HMOs must meet national minimum bedroom sizes: 6.51 m² for one person aged 10 or over, 10.22 m² for two, and 4.64 m² for a child under 10.
- Mandatory HMO licence for 5 or more people in 2 or more households (since October 2018); councils can add additional licensing for smaller HMOs.
Councils in England can add additional licensing and Article 4 directions on top of the national rules. Check the council’s website for the exact address before you buy or start work.
How much do loft conversions for extra rooms cost in East Sussex?
| Item | UK typical | Local guide | Per |
|---|---|---|---|
| Dormer loft conversion, about 30 m² | £40,000 – £60,000 | £44,800 – £67,200 | project |
| Rooflight loft conversion, about 30 m² | £22,500 – £30,000 | £25,200 – £33,600 | project |
Typical time on site: 6–10 weeks. For a figure for your house, try the guide-price tool.
Loft conversions for extra rooms by town in East Sussex
Questions about loft conversions for extra rooms in East Sussex
Will the loft room count for licensing?
Only the floor area with at least 1.5 metres of headroom counts towards the room size in England.
Does a loft room need a fire escape window?
In an HMO the main protection is usually a protected stair and fire doors. The building regulations and fire strategy decide the detail.
Do you carry out loft conversions for extra rooms across East Sussex?
Yes, across the whole of East Sussex, including Brighton, Eastbourne, Hastings.
Who licenses HMOs in East Sussex?
HMOs in East Sussex are licensed by the local council for the address. Where an area has several councils, each runs its own licensing and planning policies.
Other HMO services in East Sussex
- Extensions for extra rooms in East Sussex
- Large HMO conversions (7+ sharers) in East Sussex
- Escape routes, emergency lighting and fire stopping in East Sussex
- Ensuite installation in East Sussex
- Layout changes and room reconfiguration in East Sussex
- Fire alarm and detection systems in East Sussex
- Bedroom upgrades and room refits in East Sussex
- Fire doors in East Sussex